Convert OPML Files Online — 3 Format Options
Convert OPML File Online — Free & Instant
No signup required. Works in your browser.
📁 Drag & drop your file here
or click to browse • Max 100MB
✅ Free • ⚡ Instant • 🔒 Secure • 💻 No install
About OPML Files
OPML (.opml) is a document file format developed by Dave Winer. Outline Processor Markup
It is commonly used by writers, students, and office workers to read and annotate files in professional and personal workflows. With OpenAnyFile, you can convert your .opml files to 3 different formats directly in your browser — no software installation required.
How to Convert OPML Files — Step by Step
- Upload your file — Drag and drop your .opml file into the converter above, or click "Browse" to select it from your device. Files up to 50MB are supported.
- Automatic detection — OpenAnyFile identifies the OPML format using magic byte signature analysis (not just the file extension), ensuring accurate format recognition.
- Select target format — Choose from 3 supported output formats. Popular choices include XML, JSON, HTML.
- Convert instantly — Processing happens in the cloud and typically takes just a few seconds, even for large files.
- Download your file — Once conversion is complete, download your converted file immediately. Files are automatically deleted after 1 hour for security.
Why Convert OPML Files?
Many writers, students, and office workers need to share .opml files with colleagues or clients who may not have the right software installed. Converting OPML to a more universal format solves this compatibility issue instantly.
- Universal Compatibility: Not everyone has software that opens .opml files. Converting to a universal format like PDF, JPG, or PNG ensures anyone can access your content on any device.
- Smaller File Size: Some target formats offer better compression, reducing file size by up to 80% for easier sharing via email or cloud storage.
- Easier Editing: Convert to an editable format to modify content that may be locked or read-only in .opml format.
- Long-term Archiving: Convert to standardized formats (PDF/A, TIFF, PNG) for reliable long-term storage and future accessibility.
- Web Publishing: Convert .opml to web-friendly formats for use in websites, social media, or online presentations.
All OPML Conversion Options (3 Formats)
Below is the complete list of formats you can convert .opml files to using OpenAnyFile:
- OPML to XML — Convert your .opml file to XML format online, fast and free
- OPML to JSON — Convert your .opml file to JSON format online, fast and free
- OPML to HTML — Convert your .opml file to HTML format online, fast and free
Tips for Best Conversion Quality
For best results, ensure your source .opml file is not corrupted before converting. OpenAnyFile validates file integrity automatically during upload.
OpenAnyFile uses professional-grade conversion engines to ensure maximum quality. Common issues with .opml files include: Schema validation
OPML Format Details
| Property | Value |
|---|---|
| Format Name | OPML |
| File Extension | .opml |
| Category | Document |
| Developer | Dave Winer |
| Conversion Targets | 3 formats |
Frequently Asked Questions
Can I convert .opml files online for free?
Yes. OpenAnyFile lets you analyze and preview .opml files for free. You can convert up to 3 files per day on the free plan. Unlimited conversions are available with Pro.
What formats can I convert .opml to?
OPML can be converted to 3 formats including XML, JSON, HTML. Each conversion preserves quality and formatting as much as the target format allows.
Is it safe to convert .opml files online?
Absolutely. Files are processed securely using HTTPS encryption and automatically deleted after conversion. We never store your file contents permanently. Your data stays private.
Do I need software to convert .opml?
No. OpenAnyFile works entirely in your browser — no downloads or installations needed. It works on Windows, Mac, Linux, iOS, and Android devices.
How long does OPML conversion take?
Most .opml files convert in under 10 seconds. Larger files (over 50MB) may take up to 30 seconds depending on the target format and complexity.
Can I convert multiple .opml files at once?
Yes, batch conversion is available for Pro users. Upload multiple .opml files and convert them all to the same target format simultaneously.